Top 7 C++ Polymorphism Projects

Polymorphism

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1. dyno

   1 12 1,043 0.0 C++

   Runtime polymorphism done right

   

   Project mention: Visualizing Rust's Vtables: How Dyn Trait Works in Memory | news.ycombinator.com | 2026-09-05

   Ah. Dyno (https://github.com/ldionne/dyno) is good at this stuff. If you have types Base, Child1, Child2, you can just return a Dyno object that can be any of these, expressed as a tagged union and not a Box-equivalent, and then do regular vtable-based or otherwise polymorphic dispatch into the object. You can also arrange it so that if you have a Child3 that can't fit in the (Base, Child1, Child2) union, the Child3 can be heap-allocated and invoked transparently as well. It's open-world type erasure.

   C++ is so freakishly powerful is that it can not only solve this problem, but it can solve it via a regular library and not a language extension.

2. AppSignal

   www.appsignal.com sponsored

   AppSignal knows why the f*#k it crashed. Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.

   

3. Shoggoth

   2 6 810 5.7 C++

   Shoggoth: Asmjit Based Polymorphic Encryptor

   

4. variant

   3 5 716 0.0 C++

   C++17 `std::variant` for C++11/14/17

   

5. DynaMix

   4 3 693 3.6 C++

   :fish_cake: A new take on polymorphism

   

6. dittobytes

   5 1 650 8.5 C++

   Metamorphic cross-compilation of C++ & C-code to PIC, BOF & EXE.

   

7. te

   6 4 498 2.1 C++

   C++17 Run-time Polymorphism (Type Erasure) library

   

8. polytail

   7 2 9 5.6 C++

   Rust-like trait-based polymorphism for C++

   

9. SaaSHub

   www.saashub.com sponsored

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

C++ Polymorphism related posts

• DynaMix 2.0.0 Released

  8 projects | /r/cpp | 13 Apr 2023

• rust-like traits on plain C++ with short macro (type erasure actually)

  5 projects | /r/cpp | 7 Apr 2023

• C++ Polymorphism Without Inheritance Using Glaze

  8 projects | /r/cpp | 12 Jan 2023

• vector of objects

  3 projects | /r/cpp_questions | 7 Aug 2021

• Type Erasure in C++ Explained

  2 projects | news.ycombinator.com | 15 Apr 2021
• A note from our sponsor - SaaSHub
  www.saashub.com | 14 Oct 2026

  SaaSHub helps you find the best software and product alternatives Learn more →

Index

Sponsored

AppSignal knows why the f*#k it crashed.

Stop vibe-debugging. Every exception, every backtrace, grouped so you see patterns, not noise.

www.appsignal.com

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